/*------------------------------------------------------------------------*/
/* Sample code of OS dependent controls for FatFs                         */
/* (C)ChaN, 2012                                                          */
/*------------------------------------------------------------------------*/

#include <stdlib.h>					/* ANSI memory controls */
//#include <malloc.h>				/* ANSI memory controls */
#include "heap_4_config.h"  // freertos heap_4 memory management

#include "ff.h"


#if _FS_REENTRANT
/*------------------------------------------------------------------------*/
/* Create a Synchronization Object
/*------------------------------------------------------------------------*/
/* This function is called by f_mount() function to create a new
/  synchronization object, such as semaphore and mutex. When a 0 is
/  returned, the f_mount() function fails with FR_INT_ERR.
*/

int ff_cre_syncobj (	/* 1:Function succeeded, 0:Could not create due to any error */
	BYTE vol,			/* Corresponding logical drive being processed */
	_SYNC_t* sobj		/* Pointer to return the created sync object */
)
{
	int ret;
	
	*sobj = mem_4_malloc(sizeof(RAW_MUTEX));
  
	ret = raw_mutex_create(*sobj,(RAW_U8 *)"FATFS_LOCK",RAW_MUTEX_INHERIT_POLICY,0);
	
	if(ret == RAW_SUCCESS)
	{	
		ret = 1;
	}
	
	return ret;
}

/*------------------------------------------------------------------------*/
/* Delete a Synchronization Object                                        */
/*------------------------------------------------------------------------*/
/* This function is called in f_mount() function to delete a synchronization
/  object that created with ff_cre_syncobj() function. When a 0 is
/  returned, the f_mount() function fails with FR_INT_ERR.
*/

int ff_del_syncobj (	/* 1:Function succeeded, 0:Could not delete due to any error */
	_SYNC_t sobj		/* Sync object tied to the logical drive to be deleted */
)
{
	int ret;
	
	ret = raw_mutex_delete(sobj);
	
	mem_4_free(sobj);
	
	if(ret == RAW_SUCCESS)
	{
		ret = 1;
	}
	return ret;
}

/*------------------------------------------------------------------------*/
/* Request Grant to Access the Volume                                     */
/*------------------------------------------------------------------------*/
/* This function is called on entering file functions to lock the volume.
/  When a FALSE is returned, the file function fails with FR_TIMEOUT.
*/
int ff_req_grant (	/* TRUE:Got a grant to access the volume, FALSE:Could not get a grant */
	_SYNC_t sobj	/* Sync object to wait */
)
{
	int ret;
  
	ret = raw_mutex_get(sobj,RAW_WAIT_FOREVER);
	if(ret == RAW_SUCCESS)
	{
		ret = 1;
	}
	return ret;
}


 /*------------------------------------------------------------------------*/
/* Release Grant to Access the Volume                                     */
/*------------------------------------------------------------------------*/
/* This function is called on leaving file functions to unlock the volume.
*/

void ff_rel_grant (
	_SYNC_t sobj	/* Sync object to be signaled */
)
{
	int ret;
	ret = raw_mutex_put(sobj);

	if (ret != RAW_SUCCESS) {

		RAW_ASSERT(0);
	}
}

#endif




#if _USE_LFN == 3	/* LFN with a working buffer on the heap */
/*------------------------------------------------------------------------*/
/* Allocate a memory block                                                */
/*------------------------------------------------------------------------*/
/* If a NULL is returned, the file function fails with FR_NOT_ENOUGH_CORE.
*/

void* ff_memalloc (	/* Returns pointer to the allocated memory block */
	UINT msize		/* Number of bytes to allocate */
)
{
	return malloc(msize);
}


/*------------------------------------------------------------------------*/
/* Free a memory block                                                    */
/*------------------------------------------------------------------------*/

void ff_memfree (
	void* mblock	/* Pointer to the memory block to free */
)
{
	free(mblock);
}

#endif
